title: Morbidity of supraomohyoidal and modified radical neck dissection combined with radiotherapy for head and neck cancer: a prospective longitudinal study.
abstract: BACKGROUND
  The purpose of this study was to show the investigated impact of supraomohyoidal neck dissection and modified radical neck dissection, both combined with radiotherapy, on cervical range of motion (CROM), mouth opening, swallowing, lymphedema, and shoulder function.
  
  
  METHODS
  One hundred eight patients who had neck dissections and 98 patients who had non-neck dissections were evaluated in a prospective, nonselective, longitudinal cohort study by a physiotherapist and a speech-language pathologist (SLP) before the start of radiotherapy and up to 12 months after treatment.
  
  
  RESULTS
  The incidence of shoulder disability after neck dissection was 18%. Supraomohyoidal neck dissection had no significant effect on the evaluated parameters at any time point. Modified radical neck dissection significantly reduced CROM and mouth opening 2 months after treatment, but after 12 months only cervical rotation was still significantly reduced.
  
  
  CONCLUSIONS
  In patients treated with external beam radiation (EBRT), modified radical neck dissection induced additional morbidity regarding CROM but not regarding mouth opening, swallowing, and lymphedema 1 year after treatment. Both modified radical neck dissection and supraomohyoidal neck dissection induced shoulder disability.
authors.affiliation: Department of Otolaryngology and Head and Neck Surgery, Karolinska University Hospital, Stockholm, Sweden. Alexander.ahlberg@karolinska.se
authors.forename: Alexander
authors.initials: A
authors.lastname: Ahlberg
authors.forename: Polymnia
authors.initials: P
authors.lastname: Nikolaidis
authors.forename: Therese
authors.initials: T
authors.lastname: Engström
authors.forename: Karin
authors.initials: K
authors.lastname: Gunnarsson
authors.forename: Hemming
authors.initials: H
authors.lastname: Johansson
authors.forename: Lena
authors.initials: L
authors.lastname: Sharp
authors.forename: Göran
authors.initials: G
authors.lastname: Laurell
mesh_terms: D003131:Combined Modality Therapy; D003679:Deglutition; D005260:Female; D006258:Head and Neck Neoplasms / Q000532:radiotherapy / Q000534:rehabilitation / Q000601:surgery*; D006801:Humans; D008209:Lymphedema; D008297:Male; D037981:Neck Dissection / Q000009:adverse effects*; D011446:Prospective Studies; D016059:Range of Motion, Articular; D012785:Shoulder Joint / Q000502:physiology; D013066:Speech-Language Pathology; D016896:Treatment Outcome